CF5732 Series
NIPPON PRECISION CIRCUITS INC.
Analog clock CMOS IC
OVERVIEW
The CF5732 series are analog clock driver ICs using
32kHz reference frequency of crystal oscillator. Some
versions in accordance with the combinations of each
motor drive and alarm output characteristics can provide
a wide range of applications for various clock specifica-
tions.
The CF5732 series incorporates 4 types of pace adjust-
ment capacitors, which enables to adjust the pace with
bonding options.
FEATURES
- Built-in oscillator circuits(32.678 kHz)
On-chip feed back resistors (Rf, Rd)
Crystal oscillator capacitors (C
D
, C
G
)
Additional 4 capacitors for pace adjustment.
- Debounce circuit (AI terminal)
- Single 1.5 V supply
- Available as a die
SERIES LINEUP
CF5732EA
Built-in
Capacitor
XT terminal C
G
(pF)
XT terminal C
D
(pF)
C1(pF)
C2(pF)
C4(pF)
C4(pF)
Motor
Output
Alarm
Input
Alarm
Output
Active Level
Hand Drive Cycle(sec)
Pulse Width(msec)
Active Level
Test Function
Terminal
Active Level
Fundmental Frequency(Hz)
Modulation Frequency(Hz)
CF5732FA
11.5
29
6
7
8
9
H
1
31.25
L
Yes(1/2V
DD
)
AO
H
2048
8+1
1.0
AO
L(*2)
2048
8+1
−1.0
CF5732GA
10
25
3
4
5
6
L
1
31.25
L
Yes(1/2V
DD
)
AO
H
2048
8+1
1.0
AO
L(*1)
2048
8+1
−1.0
CF5732HA
11.5
29
6
7
8
9
H
1
15.6
L
Yes(1/2V
DD
)
AO
H
2048
16+1
AO
L(*2)
2048
16+1
CF5732JA
11.5
29
6
7
8
9
H
1
23.4375
L
Yes(1/2V
DD
)
AO
H
2048
8+1
1.0
AO
L(*2)
2048
8+1
CF5732KA
11.5
29
6
7
8
9
H
1
46.875
L
Yes(1/2V
DD
)
AO
H
2048
8+1
1.0
AO
L(*2)
2048
8+1
11.5
29
6
7
8
9
-
0.125
DUTY50%
L
Yes(1/2V
DD
)
AO
H
2048
8+1
1.0
AO
L(*1)
2048
8+1
−1.0
I
OH
MIN(mA)
I
OL
MIN(mA)
−1.0
1.0
−1.0
−1.0
(*1) AO is the reverse phase of AO, when output is active. (the same phase, when output is inactive)
(*2) AO is complete reverse phase of AO. (even output is inactive.)
NIPPON PRECISION CIRCUITS-1
CF5732 Series
PINOUT
4
3
2
1
14
5
13
12
6
Y
11
PIN DESCRIPTION
Name
VDD
VSS
TC
AI
AO
AO
OUT2
OUT1
Power supply pin
Ground
Test pin
Alarm Input
Alarm signal Output
Alarm signal Inverting Output
Motor drive output 2
Motor drive output 1
Crystal oscillator connection
Crystal oscillator connection
Supplementary internal capacitor connection 1
Supplementary internal capacitor connection 2
Supplementary internal capacitor connection 3
Supplementary internal capacitor connection 4
(Unit:
µm)
No
1
2
3
4
5
6
7
Name
VDD
VSS
TC
AI
AO
AO
OUT2
X
1023
817
553
214
151
151
151
Y
1248
1248
1248
1248
943
429
151
No
8
9
10
11
12
13
14
Name
OUT1
XT
XT
C1
C2
C3
C4
X
340
567
1101
1305
1305
1305
1305
Y
151
151
151
382
682
880
1105
Description
(0, 0) 7
8
X
9
10
XT
XT
C1
C2
C3
C4
Chip size:
1.49×1.40mm
Chip thickness:
300±30µm
Pad size:
100×100µm
Reverse side of chip is V
DD
.
BLOCK DIAGRAM
VDD
VSS
C
G
XT
C
D
4 Stage
Divider
13 Stage
Divider
XT
TC
Alarm
Test
AI
Alarm
Input
Alarm Output
Control
Mortor Output
Control
C1
C2
C3
C4
AO
AO
OUT1 OUT2
NIPPON PRECISION CIRCUITS-2
CF5732 Series
ABSOLUTE MAXIMUM RATINGS
Parameter
Supply Voltage
Input Voltage
Operating Temperature
Storage Temperature
Symbol
V
DD
- V
SS
V
IN
T
OPR
T
STG
Condition
Rating
−0.3
to
+5.0
V
SS
≤
V
IN
≤
V
DD
−30
to
+70
−40
to
+125
(V
SS
= 0V)
Unit
V
V
°C
°C
ELECTRICAL CHARACTERISTICS
(Ta= 25°C, V
DD
= 1.5V, V
SS
= 0V, f
0
= 32.768kHz unless otherwise noted)
Rating
Parameter
Supply Voltage
Supply Current
Motor Output Current
Alarm Output Current
Alarm Input Voltage
Alarm Input Center Voltage
Input Resistance
Oscillator Stability
Internal Capacitance
Symbol
V
DD
I
DD
I
MOT
I
OH
I
OL
V
IH
V
IL
V
IM
R
IN
∆f/f
C
G
C
D
(*2)
(*3)
No Load(*1)
V
DD
= 1.2V, R
L
= 200Ω
AO, AO pin, V
OH
= 0.75V
AO, AO pin, V
OL
= 0.75V
AI pin
AI pin
AI pin
AI pin
V
DD
= 1.1V to 2.0V
GA
others
GA
others
(*1) All terminals except for the supply and the crystal oscillators are open.
(*2) C
G
is the incorporated capacitance between VDD and XT.
(*3) C
D
is the incorporated capacitance between VDD and XT.
5
4.0
−1.0
1.0
V
DD
−0.2
V
SS
1/2V
DD
15
0.5
10
11.5
25
29
50
1
V
DD
V
SS
+0.2
Condition
MIN
1.1
TYP
1.5
1.0
MAX
2.0
3.0
Unit
V
µA
mA
mA
mA
V
V
V
kΩ
PPM/0.1V
pF
pF
pF
pF
NIPPON PRECISION CIRCUITS-3
CF5732 Series
FUNCTIONAL DESCRIPTION
Alarm input/output
AI
1/2V
DD
(*3)
AO
f
CY
f
PW
AO
(*1)
AO
(*2)
(*1) AO is the reverse phase of AO, when output is active. (the same phase, when output is inactive): CF5732EA, GA
(*2) AO is complete reverse phase of AO. (even output is inactive.): CF5732FA, HA, JA, KA
(*3) When AI is held at 1/2 V
DD
, the alarm reference, frequency is output at AO and AO.
Input Debouncing Circuit
Setting bouncing delay time prevents the circuit from the
erroneous operation by AI input bouncing (chattering.)
t
on
≤
31.25 msec : The alarm input is ignored
t
on
≥
62.5 msec : The alarm input is accepted
AI
(Active L)
t
CH
t
ON
NIPPON PRECISION CIRCUITS-4
CF5732 Series
Motor Drive Outputs
Step needle movement
CF5732FA, GA, HA, JA, KA
t
PW
OUT1
t
PW
OUT2
t
CY
1sec
t
CY
1sec
Continuos needle movement
CF5732EA
OUT1
t
CY
125msec
OUT2
t
CY
125msec
NIPPON PRECISION CIRCUITS-5
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